package dome1;

import sun.text.resources.it.JavaTimeSupplementary_it;

import java.math.RoundingMode;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;

public class CardList {

    private static final String[] SUITS = {"♦","♥","♠","♣"};


    public static List<Card> buyCards() {
        List<Card> list = new ArrayList<>();
        for(int i = 0;i < SUITS.length;i++) {
            for (int j = 1; j <= 13; j++) {
                //String suit = SUITS[i];
                //int rank = j;
                Card card = new Card(SUITS[i],j);
                list.add(card);
            }
        }
        return list;
    }

    public static void shuffle(List<Card> list ) {
        Random random = new Random();
        for (int i = list.size()-1 ; i > 0 ; i--) {
            int index = random.nextInt(i);
            swap(list,i,index);
        }
    }

    private static void swap(List<Card> list,int i,int j) {
        Card tmp = list.get(i);
        list.set(i,list.get(j));
        list.set(j,tmp);
    }
    public static void main(String[] args) {
        List<Card> list=buyCards();
        System.out.println(list);
        shuffle(list);
        System.out.println(list);

        List<List<Card>> hand=new ArrayList<>();
        List<Card> hand1=new ArrayList<>();
        List<Card> hand2=new ArrayList<>();
        List<Card> hand3=new ArrayList<>();

        hand.add(hand1);
        hand.add(hand2);
        hand.add(hand3);

        //揭牌,3个人每个人轮流抓5张牌
        for (int i = 0; i < 5; i++) {
            for (int j = 0; j < 3; j++) {
                Card card=list.remove(0);//每次揭牌都是揭0下标的牌
                hand.get(j).add(card);
            }
        }

        for (int i = 0; i < 3; i++) {
            System.out.println("第"+i+"个人的牌:"+hand.get(i));
        }
        System.out.println("剩下的牌:"+list);
    }
}
